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Voltage regulator 1702.3702-01
General information
Connection diagram
Dimensional drawing


General information:

The voltage regulator 1702.3702-01 is purposed for voltage maintenance of the onboard vehicle network in predetermined limits in all system operation modes of electrical equipment at change of the rotation frequency of the alternator rotor, electrical load and environment temperature.

Applicability: automobiles VAZ-2108, -09, -10 (with carburetor), VAZ-21213, "Oka" with the alternator 37.3701 or its modifications. The voltage regulator 1702.3702-01 is a functionally improved analog of the regulator 1702.3702*.

The automobile voltage regulator 1702.3702-01 is a regulator of the highest class. The regulator output switch is made under MOSFET technology owing to that the losses of power given off in the form of heat have been sharply lowered; the regulator reliability has been enlarged. The heating of the regulator relative to environment temperature is less than 5°C which allowed to provide the exact characteristic of the regulating voltage thermal compensation.

Due to usage of the additional wire, voltage on the alternator is maintained directly on the alternator output terminal. Herewith are reached the highest parameters of the current velocity and load characteristics. It prolongs battery life cycle, provides optimal operating modes of all using equipment increasing thus reliability of all automobile electrical equipment.

The regulator is produced in a single climatic design О2.1 in accordance with GOST 15150 for internal market and for export. On extent of protection against penetration of foreign bodies and water, the item meets design IP68 in accordance with GOST 14254. All electrocontact connecting elements of the regulator are made of brass rolling with galvanic cover that guarantees reliability of the electrical connections during all service period. An operating mode of the regulator is S1 in accordance with GOST 3940.

The regulator is mounted directly on the alternator where the setting of regulators 1702.3702-01 and 1702.3702 with the help of standard screws is stipulated, the additional wire is fixed on the standard screw of a circuit "30". It is not recommended to set the voltage regulator 1702.3702-01 on the alternators in the automobiles with the electrical circuit that differs from the typical one. An indication of misfit to the circuit diagram or alternator type is a shortage of wire length, operation of the engine is possible after ignition cutoff.

The warranty period of exploitation is 3 years from the date of commissioning or from the date of sale in retail commercial network. The warranty obligations of the manufacturer are valid during 4 years from the date of the item production. The date of production is marked on the case of the item.

* - 1702.3702 - “metal cube“. It is manufactured by great number of manufacturers. It is not protected against moisture. It was excluded out of application many years ago because of low endurance to climatic influence



Range of operating temperatures, °С
-45 .. +100
  Regulating voltage with battery at t°=(25 ± 2) °С and load of alternator 3А, V
14,4 ± 0,1
  Regulating voltage with battery at t°=(25 ± 2) °С in range of alternator load from 3A to 0,9·Imax**, V
14,4 ± 0,15
  Maximum current of output circuit, А
  Thermal compensation of regulating voltage, mV/°С
-4,5 ± 1,5
  Residual voltage on output "DF", not more, V
  Maximum allowable long-term influence of increased supply voltage, V
  Maximum allowable influence of increased supply voltage up to 5 min., V
  Maximum allowable pulse overvoltages in accordance with GOST 28751, V
** - According to the technical conditions on the item  


Connection diagram:

Connection diagram of the voltage regulator 1702.3702-01


Dimensional drawing:

Dimensional drawing of the voltage regulator 1702.3702-01
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